It doesn't sound like it would be hard to write your own. Not sure how useful it is though, since it doesn't make any attempt to replicate the kind of errors you would see in the wild.

Doesn't look like the code is freely available, although the author states they'll provide a copy of the app for research purposes if asked: https://eclecticlight.co/2020/04/19/last-week-on-my-mac-vand...

As an alternative option: zzuf[0] is meant to be a fuzzer, but its take on that is "randomly change random bytes in a file" (it can be run as a wrapper around a victim process like your image viewer, but it's happy to run on bare files).

[0] http://caca.zoy.org/wiki/zzuf